Adtech iMASTER – A1 Series User Manual page 136

A1-User's Manual
25.07 Filter bandwidth

Range: 0.0 ~ 1000 milliseconds in 0.1 ms

Initial value: 1 ms

Real time editable Iq feedback Low Pass Filter time constant


25.08 Limit time

Range: 0.0 ~ 100 Sec in 0.1 Sec

Initial value: 0.5 Sec

Real time editable OVS control fails check time. If PID output is saturated to
(Maximum OVS output frequency)
occurred.
Case1) if frequency is increased at no regeneration condition,
Cause: when a current feedback value is corrupted by noise.
Measures:

 Change a
 Please set the
If output Frequency is not stable,
'25.07' (Filter bandwidth)
Increase

Recommended Value as a function of
value should be set accordingly
Not set over 50

Frequency Add
25.02 (Maximum OVS output frequency)
Output frequency
Counter
Trip signal
'25.07' (Filter bandwidth)
'25.07' (Filter bandwidth)
value
'25.05' (OVS D gain), '25.07' (Filter bandwidth)
during this time period, VFD will stop and ovFS will be
Counter
=
25.08 (Limit time)
0.5 Sec
예) 25.08 (OVS limit) = 0.5 Sec
'25.05' (OVS D gain)
and
between 5 and 30 (ex 5, 10, 20, 30ms)
１３２
'25.02'
Trip (OVS fail)
=
80Hz
60Hz